Dish-washing machine.



L. S. BEST.

DISH wAsHxNG MACHINE.

` APPLICATION FILED AUG.28| 1916. 1,249,298. Patented Sept. 18, 191?.

2 SHEETS-SHEET l.

t @canard SB es ln V( miriam/MA* ATTORNEYS-l DISH WASHING MACHINE.APPLICATION FILED AUGJB. 1916.

L. S. BEST.

Fig.

Patented Sept. 18, 1917.

2 SHEETS-SHEEf 2.

1 N V PINTOR Leonard es.

HY Y

ATTORNEY les soap water or the like.

porting or sUIsUN,

LEoNAzan s. Bns'r,

. BIRMINGHAM, or

' van s'rAns DISH-WASHING MACHINE.

Speoioation of Letters Patent.

`Patented Sept. 18, 1917.

Application led August 28, 1916.v Serial No. 117,189.

To all whom it may concern.'

Be it known that l, LEONARD citizen of the United States, residing atSuisun, in the county of Solano and State of California, have invented anew and useful Improvement in Dish-Washing Machines, of which thefollowing is a specification.

This invention consists of a dish washing machina l One of the objectsof the present invention is to provide a simple, cheaply manufactured,easily operated dish washing machine, comprising a container providedwith dish supporting racks so arranged vand positioned within thecontainer that :the dishes supported thereby may be cleaned by theflushing action of a cleansing liquid such as S. B Es'r, a

Another object of the invention is to providel a novel rack, andfurthermore an impellente maintain a continuous ad v10- vlentcirculation of the cleaning liquid between the dishes. l

Further objects will hereinafter appear. *Theinvention consists of theparts, and the construction and combination of parts as hereinafter morefully ,described and claimed, having reference to the accompanyingdrawing in which l Figure `1 is a central vertical section through thedish washing machine.

Fig. 2 is a plan view showing a cover removed.

Fig. 3 is asperspective View of one form of dish supporting rackemployed.'

Fig. 4 is a similar view of another form of rack. y

Referring to the drawings in detail, A indicates a cylindricalshapedtank provided with a sloping bottom 2, and a central recessedsection 3.Mounted interior of the tank and centrally positioned therein, is ashaft 4 upon which is secured an impeller 5 hereinafter to be described.

The lower end of the' shaft 4 projects through the central recessedportion 3 in the bottom and is here supported in a pair of bearingmembers 6'l and 7 one of said bearings being secured on the bottom ofthe container, and the other in a bracket 8.

Secured on lthe shaft intermediate of the bearings 6 and 7 is a drivingpulley 9 to which power may be transmitted in any suitconnected with adischarge able manner and I15, to which form of removable dish sup-` toprovide' .ters and the like.

.tank A, and are openingformed in the central recessed sece tion 3 is avalve 10v which may be opened when it is desired t0 empty the tank.

The tank proper may legs 11 or any convenient frame, and it 1s besupported upon furthermore provided with a cover 12 which may be removedto fill the tank with soap water or any other cleaning medium and alsofor` the purpose of inserting or removing a pair of dish supportingracks such as shown in Figs. 3 and 4 The rack shown` in Fig. 3 issemi-circular in s ape and consists of a pair of end frames 14 and issecured a semi-circular shaped bottom frame 16.' Pivotally mounted inthe frame section 16 is a plurality of wire rings 17 which are adaptedto receive and support plates and saucers or like dishes, and for thepurpose of preventing said dishes from rollin out between the supportingrings, a p urality of semi-circular -y side-stays 18 have beenprovidedwhich are secured to the frame ends '14 and 15.

Mounted intermediate of. the frame ends 14 and 15 in any positionbetween 17, is an elongate open mesh knives, spoons, forks, shown 1n-Wire stays 18 of semicircular shape, but is preferably more open inconstruction to permit insertion of larger dishes such' as plat- .Theseracks when filled with dishes, arelowered into the cylindrical when thetank is filled with soap water or any other cleansing medium. Theimpeller provided forms one `of the important features of the presentinvention.

the ringswire cylinder vof holder 19, which is adapted to receive etc.The rack member Fig. 4`iss1milarly constructed of es.v

here practically submerged By referring to Fig. 1 it will be .seen thatthe hub 20 of the impeller is cone shaped,v

and vthat the impeller blade consists of one single spiral shaped bladehaving its largest area at the bottom as indicated atv 521, andgradually decreasing as end of the hub Q0. suitable source to the pulley9 and shaft 4, upon which the impeller it to rotate with sufficientspeedto maintain is mounted, causes it reaches the upper Y Power appliedfrom any a continuous and violent circulation of the cleaning medium.The shape of the spiral bladed impeller throws the water in which thedishes are submerged radially in all-directions with suchviolence thatthe surface of the submerged dishes are readily cleansed in a very fewminutes, the open construction of the dish supporting racks being suchthat water is permitted to penetrate and circulate freely in alldirections. The circu lation is aided by the inclined annular bottom,and the central depression from which the spiral distributer draws itssupply.

In actual operation it has been found desirable to employ two waters,first the tank is filled with soap water which is circulated between thedishes approximately 3 minutes. The impeller is then stopped and thevalve 10 opened to permit the tank to be emptied. he tapering bottom andthe central recess I l3 permitting practically speaking, every .stancemay be added to the water.

drop to be removed. Valve 10 is then closed and the tank again refilledwith a rinsing water which is again circulated' a few minutes andfinally drawn olf through the valve 10. This rinsing water shouldpreferablybe comparatlvely hot, as the dishes will be dried by the heatimparted when the water is removed. The individual racks may then beremoved and the dishes placed upon the shelves, as wiping with towelsfor the purpose of drying is not necessary.

Theracks constructed as here shown, not

only form convenient baskets for carrying the dishes to and from thepantry, but are so open in construction that circulation around everydish or article submerged is permitted;

While soap water has here been mentioned as a cleaning medium, itisobvious that soda, ammonia, or any other grease cutting sub- Similarlywhile a pulley is shown as connected with the impeller shaft, it isobvious that a direct connected electric motor or hand operated geardrive may be employed if desired.

The materials and finish of the several parts of the machine mayotherwise be such as the experience and judgment of the manufacturer maydictate.

I wish it understood that various changes in form, proportions, andminor details of construction may be resorted to within the scope of theappended claim, and that I do not wish to limit myself to the specificdesign or construction lhere shown.

Having thus described my invention, what I claim and desire tovsecure byLetters Patent is In a dish washing machine of the vcharacter described,a cylindrical container, having an annular inclined bottom and adepressed central sump, means carried upon the annular bottom around thecentral sump, to support articles to be washed, a vertical shaftjournaled and turnable in the center ofthe I sump, said shaft having anupwardly divergent hub, a spirally disposed blade fixed to the hub,decreasing in diameter upwardly from the bottom, and a motor connectingwith the shaft below the sump.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

LEONARD S. BEST. Witnesses: l WILBURN W. CUNNINGHAM,

F. O. SGARLETT.

